An object moves on a trajectory given by r(t) = (15 cos 4t,15 sin 4t) for 0 t pi. How far does it travel? The object travels units. (Type an exact answer, using n as needed.) Find the length of the following two-dimensional curve. r(t) = (2 cos t + 2t sin t,2 sin t - 2t cos t) for 0 t pi/2 L = (Type an exact answer, using n as needed.) Find the length of the following three-dimensional curve, r(t) = (1 + 5t,4 - 2t - 7 + 2t>, for 1 t 8 L = (Type an exact answer, using radicals as needed.)

answer: (1,3) and (-2,0) i think.

she gotta workk that a 2

step-by-step explanation:

both the histogram and the stem and leaf plot will visually show how many shoppers were of various ages within each range of data.   the histogram does not give us the specific ages of these shoppers unlike the stem and leaf plot.a histogram does not give us a true range of the data because we do not know exactly how old the shoppers were. a stem and leaf plot will give exact ages, so we can determine the exact range along with all measures of center and the others measures of center.   with the histogram, we cannot find any of these.

step-by-step explanation:

one peck is 9.309 quarts

9.309x 2